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onsemi P6SMB180AT3G
- Part No.:
- P6SMB180AT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180AT3G.pdf
- Description:
- TVS DIODE 154VWM 246VC 425TEPBGA
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
P6SMB180AT3G from ON Semiconductor is a unidirectional 600 W peak power TVS diode designed for transient overvoltage protection in DC power rails and signal lines. It features a 154 V working peak reverse voltage (VRWM), 180 V nominal Zener breakdown voltage (VBR) at 1 mA test current, clamps to 246 V at 2.4 A peak pulse current (IPP), and delivers sub-1 ns response time with <5 µA leakage above 10 V.
For engineers reviewing the P6SMB180AT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, clamping ratio (VC/VBR = 1.37), UL 497B certification for isolated loop protection, and SMB package thermal performance under repetitive surge conditions.
Technical Context
This device operates as a voltage-clamping transient suppressor in parallel with protected circuitry, leveraging avalanche breakdown to shunt surge energy away from sensitive components. Its low zener impedance and fast response ensure minimal overshoot during ESD or lightning-induced transients.
The P6SMB180AT3G is rated for 600 W peak power at 1 ms pulse width (10/1000 µs waveform), supports 100 A forward surge current, and maintains stable operation across −65°C to +150°C junction temperature range. Thermal resistance from junction-to-lead is 25°C/W, enabling reliable power dissipation on standard FR-4 PCBs with minimum footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 154 V - Maximum continuous reverse operating voltage before clamping begins; must exceed system DC rail by ≥10%. |
| VBR @ IT=1 mA | 180 V (min 171 V, max 189 V) - Precise avalanche onset threshold ensuring predictable turn-on behavior. |
| VC @ IPP=2.4 A | 246 V - Clamped voltage during 10/1000 µs surge; defines maximum stress imposed on downstream circuitry. |
| Peak Power | 600 W @ 1 ms - Energy-handling capability sufficient for IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges. |
| Leakage Current | <5 µA @ 154 V - Negligible standby power loss and no measurable loading on high-impedance circuits. |
| Response Time | <1 ns - Enables suppression of fast-rising transients before IC-level protection can react. |
| ESD Rating | Class 3 HBM (>16 kV) - Meets stringent electrostatic discharge immunity requirements for industrial interfaces. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, Pb-free, RoHS-compliant thermosetting plastic housing with cathode polarity band. Dimensions: 4.32 mm × 2.30 mm × 1.02 mm (L × W × H); modified L-bend leads for enhanced pad adhesion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point in protected circuit; establishes reference for clamping action. |
| Cathode | High-side transient input | Connected to line being protected; avalanche conduction occurs from cathode to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - enables use in telecom, medical, and industrial safety-critical interfaces without additional certification burden. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - suitable for engine control and ADAS power domains. |
| SURMETIC® Package | Void-free transfer-molded construction with 260°C soldering tolerance - ensures long-term hermeticity and thermal cycle robustness in harsh environments. |
| Low Clamping Ratio | VC/VBR = 1.37 - Minimizes overvoltage stress on downstream ICs compared to higher-ratio alternatives (e.g., >1.5). |
| High Surge Current | 2.4 A IPP at 180 V - Supports repeated surge events per IEC 61000-4-5 without parameter drift or degradation. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Lines |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp transients before they reach primary-side controller ICs. Use Value: Limits peak voltage to 246 V during 100 V/50 ms load dump event, preventing damage to 30 V-rated input capacitors and MOSFETs. |
Use Scenario: CAN_H/CAN_L differential pair in vehicle body electronics exposed to ESD and battery disconnect spikes. IC Role / Device Role / Timing Role: Two P6SMB180AT3G devices (one per line) referenced to chassis ground provide common-mode surge suppression. Use Value: Maintains CAN signal integrity by clamping transients within 1 ns while adding only 0.1 pF capacitance at 0 V bias - no data rate degradation at 500 kbps. |
| Medical Equipment Isolated Sensor Interfaces | Telecom DSL Line Card Overvoltage Protection |
|
Use Scenario: 4–20 mA current loop interface in patient monitor connected to external sensors via long cables. IC Role / Device Role / Timing Role: Primary overvoltage clamp on analog input side, upstream of isolation amplifier and ADC. Use Value: UL 497B recognition validates compliance with medical isolation barrier standards; 246 V clamping prevents latch-up in precision op-amps. |
Use Scenario: ADSL/VDSL line card front-end exposed to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: First-stage protection before hybrid transformer and line driver ICs in central office equipment. Use Value: 600 W peak power rating handles 10/700 µs telecom surges up to 4 kV; low leakage avoids affecting line impedance matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same VRWM (154 V), identical SMB package, but lower 400 W peak power rating and higher VC (252 V @ 2.4 A). | Limited to lower-energy surge environments (e.g., IEC 61000-4-2 ESD only); not rated for IEC 61000-4-5 Level 4. | Select when cost sensitivity outweighs need for full 600 W surge margin and UL 497B certification is not required. |
| 1.5SMC180A | Higher 1.5 kW peak power, same VBR range, but larger SMC package (7.1 mm × 6.2 mm) and 10× higher junction-to-ambient thermal resistance (100°C/W). | Requires more PCB area and heatsinking; better suited for infrequent, high-energy surges rather than repetitive industrial transients. | Choose for legacy designs using SMC footprints or where extreme single-event energy absorption is prioritized over board space and thermal efficiency. |
Compared with SMBJ180A and 1.5SMC180A, the P6SMB180AT3G delivers optimal balance of compact SMB footprint, certified 600 W surge handling, UL 497B compliance, and low thermal resistance - making it preferred for space-constrained, high-reliability industrial and automotive power rail protection.
Availability
P6SMB180AT3G is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, medical sensor interfaces, and telecom line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB180AT3G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The P6SMB series belongs to ON Semiconductor's transient voltage suppressor portfolio, engineered specifically for high-reliability overvoltage protection in harsh electromagnetic environments with emphasis on UL certification, AEC-Q101 qualification, and robust surge endurance.
FAQ
What is the working peak reverse voltage (VRWM) of the P6SMB180AT3G?
The P6SMB180AT3G has a VRWM of 154 V, meaning it remains non-conductive up to this DC or continuous peak reverse voltage. This value is derived from the 180 V nominal breakdown voltage with a guaranteed 10% margin below VBR min (171 V), ensuring reliable blocking during normal operation while allowing headroom for voltage tolerances and ripple.
How does the P6SMB180AT3G differ from bidirectional TVS diodes?
The P6SMB180AT3G is unidirectional and functions only during positive transients on its cathode relative to anode - ideal for DC power rail protection. Unlike bidirectional variants (e.g., P6SMB180CA), it cannot suppress negative-going surges without external polarity reversal, but offers lower leakage and tighter VBR tolerance due to dedicated avalanche structure design.
Is the P6SMB180AT3G suitable for automotive applications?
Yes, the P6SMB180AT3G is AEC-Q101 qualified and PPAP capable, with validated performance across −65°C to +150°C operating temperature range. Its SURMETIC® package withstands automotive thermal cycling and vibration, and its UL 497B recognition supports use in isolated subsystems like BCMs and infotainment power domains.
What is the clamping voltage of the P6SMB180AT3G at its rated peak pulse current?
The P6SMB180AT3G clamps to 246 V at its specified peak pulse current of 2.4 A (10/1000 µs waveform). This VC value defines the maximum voltage seen by protected circuitry during surge events and reflects a clamping ratio of 1.37 relative to its 180 V nominal breakdown voltage - a key metric for downstream component survivability.
Does the P6SMB180AT3G require a heatsink in typical applications?
No, the P6SMB180AT3G does not require an external heatsink in standard applications. With a junction-to-lead thermal resistance of 25°C/W and 600 W peak power rating applied for ≤1 ms, heat dissipation is transient and localized. Continuous power dissipation is limited to 3.0 W at 75°C lead temperature, which is managed through standard PCB copper pour per ON Semiconductor's recommended footprint for Case 403A.
P6SMB180AT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 130pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB180AT3G FAQ
1.How can I place an order for P6SMB180AT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180AT3G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6SMB180AT3G reliable?
The price and inventory of P6SMB180AT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180AT3G is usually 5 days.
3.What payment methods are accepted for P6SMB180AT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180AT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180AT3G?
P6SMB180AT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180AT3G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6SMB180AT3G?
For technical support, including P6SMB180AT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180AT3G requirements.
6.How does Aetrix verify that P6SMB180AT3G is sourced from the original manufacturer or authorized distributors?
All P6SMB180AT3G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6SMB180AT3G meets industry standards.
7.What is the process for return or replacement of P6SMB180AT3G?
All P6SMB180AT3G units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180AT3G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6SMB180AT3G part is unused and in its original packaging.
Return procedure for P6SMB180AT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB180AT3G Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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